diff --git a/src/bin/flat/main.rs b/src/bin/flat/main.rs
index 9705173..7981c61 100644
--- a/src/bin/flat/main.rs
+++ b/src/bin/flat/main.rs
@@ -4,20 +4,13 @@ use flo_canvas::*;
 use flo_draw::*;
 use glam::*;
 
-use crate::ifaces::{DebugTraceable, Traceable};
+use refraction::ifaces::{DebugTraceable, Traceable};
 use refraction::mathx::MatExt;
-use riemann::{trace_iter, Metric};
-use tube::metric::Tube;
-use tube::Space;
-use types::{Location, Object, Ray};
-
-mod fns;
-mod ifaces;
-mod riemann;
-mod tube;
-mod types;
-
-const DT: f32 = 0.1;
+use refraction::riemann::{trace_iter, Metric};
+use refraction::tube::metric::Tube;
+use refraction::tube::Space;
+use refraction::types::{Location, Object, Ray};
+use refraction::DT;
 
 fn draw_loop(gc: &mut Vec<Draw>, mut pts: impl Iterator<Item = Vec2>) {
 	gc.new_path();
@@ -163,7 +156,7 @@ fn test_put_object() {
 	use approx::assert_abs_diff_eq;
 
 	let ε = 1e-5;
-	let m = riemann::samples::ScaledMetric {
+	let m = refraction::riemann::samples::ScaledMetric {
 		scale: vec2(3., 4.),
 	};
 
diff --git a/src/bin/flat/fns.rs b/src/fns.rs
similarity index 99%
rename from src/bin/flat/fns.rs
rename to src/fns.rs
index 491df0d..347e24f 100644
--- a/src/bin/flat/fns.rs
+++ b/src/fns.rs
@@ -1,4 +1,4 @@
-use refraction::mathx::FloatExt2;
+use crate::mathx::FloatExt2;
 
 pub trait Limiter {
 	fn value(&self, x: f32) -> f32;
diff --git a/src/bin/flat/ifaces.rs b/src/ifaces.rs
similarity index 100%
rename from src/bin/flat/ifaces.rs
rename to src/ifaces.rs
diff --git a/src/lib.rs b/src/lib.rs
index f69adc8..af61334 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,10 @@
+mod fns;
+pub mod ifaces;
 pub mod mathx;
 pub mod mesh_loader;
 pub mod mesh_tracer;
+pub mod riemann;
+pub mod tube;
+pub mod types;
+
+pub const DT: f32 = 0.1;
diff --git a/src/bin/flat/riemann.rs b/src/riemann.rs
similarity index 99%
rename from src/bin/flat/riemann.rs
rename to src/riemann.rs
index a6e3d39..961bfa4 100644
--- a/src/bin/flat/riemann.rs
+++ b/src/riemann.rs
@@ -1,5 +1,5 @@
+use crate::mathx::Decomp2;
 use glam::*;
-use refraction::mathx::Decomp2;
 
 pub type Tens2 = [Mat2; 2];
 
diff --git a/src/bin/flat/tube/coords.rs b/src/tube/coords.rs
similarity index 100%
rename from src/bin/flat/tube/coords.rs
rename to src/tube/coords.rs
diff --git a/src/bin/flat/tube/metric.rs b/src/tube/metric.rs
similarity index 99%
rename from src/bin/flat/tube/metric.rs
rename to src/tube/metric.rs
index b4d4c60..7f923ab 100644
--- a/src/bin/flat/tube/metric.rs
+++ b/src/tube/metric.rs
@@ -1,7 +1,7 @@
 use glam::{f32, vec2, Mat2, Vec2};
-use refraction::mathx::Decomp2;
 
 use crate::fns::{self, Limiter};
+use crate::mathx::Decomp2;
 use crate::riemann::{Metric, Tens2};
 
 #[derive(Copy, Clone, Debug)]
@@ -75,10 +75,10 @@ mod test {
 	use glam::{vec2, Vec2};
 	use itertools_num::linspace;
 
+	use crate::mathx::Decomp2;
 	use crate::riemann::Metric;
 	use crate::tube::Space;
 	use crate::types::Ray;
-	use refraction::mathx::Decomp2;
 
 	use super::Tube;
 
diff --git a/src/bin/flat/tube/mod.rs b/src/tube/mod.rs
similarity index 100%
rename from src/bin/flat/tube/mod.rs
rename to src/tube/mod.rs
diff --git a/src/bin/flat/types.rs b/src/types.rs
similarity index 100%
rename from src/bin/flat/types.rs
rename to src/types.rs